Cards that reset your opponent's entire board state while leaving your own intact are few and far between, so the power of this card should not be underestimated, even though it doesn't technically destroy anything
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Whenever a nontoken creature you control dies, if it had counters on it, create X tapped 2/1 white and black Inkling creature tokens with flying, where X is the number of counters it had on it
It's definitely fun
There are casual decks, competitive decks, combo decks, and goodness knows how many themed decks
It just so happened that both sets were being printed in the same facility
Just get those three cards going and you have infinite turns